Malicious PDF — malware analysis report

Static analysis result for SHA-256 8aa72fcbc737e512…

MALICIOUS

PDF

66.1 KB Created: 2021-02-13 00:30:43 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: de4b989a295640d48ed970d5b541e08b SHA-1: e2df5fc08493926acc1cc8b29d1647bbfe1408a7 SHA-256: 8aa72fcbc737e51235b756b5f7c28c4de6ab7311d93a61061aab1a07f384a771
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://druttle.ru/wix?keyword=liberty+hill+independent+school+district PDF link annotation
    • https://cdn.sqhk.co/ruvonusebex/wiaiglh/free_dance_radio.pdfIn PDF document text
    • http://itrom.fun/berajoziginovamabowaludoinmr8.pdfIn PDF document text
    • http://leadtop.co/hijackthis_report_analyzerybzde.pdfIn PDF document text
    • http://milimoje.iblogger.org/saaho_audio_songs_naa_songs_please.pdfIn PDF document text
    • https://cdn.sqhk.co/gisusisabez/gf3hhgi/no_crop_for_instagram_iphone.pdfIn PDF document text
    • https://newosupileseru.weebly.com/uploads/1/3/2/3/132303396/fubokib-vowuwaki.pdfIn PDF document text
    • https://wudajelenap.weebly.com/uploads/1/3/4/4/134470879/520cea121.pdfIn PDF document text
    • https://takadoturig.weebly.com/uploads/1/3/4/1/134108809/a8ffcf595d.pdfIn PDF document text
    • https://cdn.sqhk.co/foxidagon/4qjgihD/libuwage.pdfIn PDF document text
    • https://cdn.sqhk.co/patagarinixa/jbWTekY/52707649008.pdfIn PDF document text
    • http://unreguezff.rest/vebisapoxetovefikatijii2.pdfIn PDF document text
    • http://islemleriniz.org/stellaris_administrative_operationsahmf3.pdfIn PDF document text
    • http://vidclips.design/zuxubajepomaxugaj0jfjn.pdfIn PDF document text
    • https://cdn.sqhk.co/fabozesemi/ajcgf7t/btd_battles_download_pc_free.pdfIn PDF document text
    • https://cdn.sqhk.co/sexifirume/ej6jbM3/83778940712.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/fifuto/monday_to_friday_calendar_template.pdfIn PDF document text
    • https://s3.amazonaws.com/loneminovu/input_and_output_tables_super_teacher_worksheets.pdfIn PDF document text
    • http://widopux.epizy.com/islamorada_fishing_report_march_2019.pdfIn PDF document text
    • https://s3.amazonaws.com/fekife/metallica_album_cover_android_wallpaper.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c795.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC795 5132 bytes
SHA-256: 7671235b6ff88866679c7f1c2a4131398e77537a509a7192ef38ac201003d90a
font_01_sfnt_off0000d90a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD90A 10016 bytes
SHA-256: 10b0b48a74060d8c968520913ece1fbf8a79c00aa48fdd1392025d0ddf94c3f6